<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>vue.js demo</title>
    <script src="../js/vue.js"></script>
</head>
<body>
<div id="app">
    <h1>{{title}}</h1>
    <h1>{{user.username}}</h1>
</div>
</body>

<script>
    new Vue({
        el: '#app',
        data: {
            title: 'first vue demo...',
            user: {
                username: 'helen',
                age: 19
            }
        }
    })
</script>
</html>
